Fiber coupling efficiency in non-Kolmogorov satellite links
Fiber coupling efficiency in non-Kolmogorov satellite links
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DOI：
10.1016/j.optcom.2014.09.063
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发表时间：
2015-02
影响因子：
2.4
通讯作者：
Chao Zhai;L. Tan;Siyuan Yu;Yubin Cao;Jing Ma
中科院分区：
文献类型：
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作者：
Chao Zhai;L. Tan;Siyuan Yu;Yubin Cao;Jing Ma
研究了非柯尔莫哥洛夫卫星链路中光纤耦合效率的行为。考察不同均方根风速、天顶角、接收透镜直径、结构常数和波长下下行链路光纤耦合效率与非柯尔莫哥洛夫幂律指数的关系，发现当非柯尔莫哥洛夫幂律指数增大时，光纤耦合效率降低。在固定的非柯尔莫哥洛夫幂律指数下，下行链路的光纤耦合效率随着均方根风速、天顶角、接收透镜直径或结构常数的增大以及波长的减小而减小。对于任何非柯尔莫哥洛夫卫星下行链路，相干长度的减小都会使最优设计参数变大。而当卫星上行链路考虑光纤耦合效率时，非柯尔莫哥洛夫湍流的影响可以忽略不计。
Behavior of the fiber coupling efficiency in non-Kolmogorov satellite links is investigated. Examining the fiber coupling efficiency of downlink versus the non-Kolmogorov power law exponent for different rms wind speeds, zenith angles, receiver lens diameters, structure constants and the wavelengths, the fiber coupling efficiency is found to decrease when the non-Kolmogorov power law exponent increases. At a fixed non-Kolmogorov power law exponent, the fiber coupling efficiency of downlink is found to decrease as the rms wind speed, the zenith angle, the receiver lens diameter or the structure constant increases and the wavelength decreases. For any non-Kolmogorov satellite downlink, the reduction of coherence length will make the optimum design parameter larger. And when the fiber coupling efficiency is considered in the satellite uplinks, the effect of non-Kolmogorov turbulence can be neglected.